export interface ExtractReasoningMiddlewareOptions {
    openingTag: string;
    closingTag: string;
    separator?: string;
    enableReasoning?: boolean;
}
export declare function extractReasoningMiddleware<T extends {
    type: string;
} & ({
    type: 'text-delta' | 'reasoning';
    textDelta: string;
} | {
    type: string;
}) = {
    type: string;
    textDelta: string;
}>({ openingTag, closingTag, separator, enableReasoning }: ExtractReasoningMiddlewareOptions): {
    wrapGenerate: ({ doGenerate }: {
        doGenerate: () => Promise<{
            text: string;
        } & Record<string, any>>;
    }) => Promise<{
        text: string;
    } | {
        text: string;
        reasoning: string;
    }>;
    wrapStream: ({ doStream }: {
        doStream: () => Promise<{
            stream: ReadableStream<T>;
        } & Record<string, any>>;
    }) => Promise<{
        stream: ReadableStream<T>;
    }>;
};